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Encuentra mentalmente el valor de cada expresión.
Clock Cards Half Past
¿Qué observas?
¿Qué te preguntas?
¿Qué hora se muestra en cada reloj?
Para los los primeros 2 relojes, marca la hora.
Para el resto de los relojes, escribe la hora. Usa las palabras “en punto” o “y media”.
2 y media
3 en punto
3 y media
2 y media
3 en punto
3 y media
The purpose of this activity is for students to connect their understanding of half of a circle to the minute hand moving halfway around the face of a clock (MP7). Students watch a display clock to see that as the minute hand goes around the clock, the hour hand goes from one hour to the next. In the Activity Synthesis, students add the minute hand to their half-past clock cards. In the next lesson, students will connect the term “half past” to 30 minutes to write times in hours and half hours.
Use a display clock set to 10:00 to move the minute hand around until the clock shows 11:00. If a display clock is not available, this video can be used.
¿Qué observas?
¿Qué te preguntas?
“Hemos visto relojes que muestran el tiempo tanto en horas como en medias horas” // “We’ve looked at clocks that show times in hours and half hours.” Display the clock cards showing 2 o’clock and half past 2.
“¿En qué se parecen estos relojes? ¿En qué son diferentes?” // “What is the same about these clocks? What is different?” (Both clocks have two hands. On the clock showing 2 o’clock, the minute hand points to the 12; but on the half-past clock, the minute hand points to the 6. On the clock showing 2 o’clock, the hour hand points at the 2; but on the half-past clock, it points between 2 and 3.)